FISHES FROM ECUADOR AND PERU—STARKK 775 



This species may be known by the elong-ate form, in connection with 

 the num))erof scales, the lenj^th of head, and the })ars on caudal. The 

 species having- the caudal barred are all deepei'. 



The type and only specimen is ?>2 cm. in entire length and was taken 

 in the Kio Ferene at Perene, Peru. It is deposited in \\w U. S. 

 National Museum, Cat. No. 53-1:78. 



22. I.EPOR1NUS LESCHENAULTI Cuvier and Valenciennes. 



Two specimens collected at the market at (xuaya([uil. These unlike 

 the specimens described by Doctor (xiinther" agree very well in length 

 of head and depth of body with the figure published by Cuvierand Valen- 

 ciennes. They have 39 or -tO scales in the lateral line; the type is said 

 to have 3(]. 



23. TETRAGONOPTERUS PERUANUS MuUer and Troschel. 



Specimens were taken from Kio de P^ten, at Eten, and at Payta, 

 Peru. 



Head, 4 to -i^ in length to base of caudal; depth, '■Ih; to 2f ; eve, 3^ 

 in head; interorbital space, 2^ to 2f ; snout, ?ij to 3t; maxillarv, 2i^; 

 heig-ht of front of dorsal, 1 to 1:^; front of anal, li to If; pectoral, 1| 

 to lir; ventral, 1^; caudal, | to 1. Dorsal, 10 or 11; anal, 2S to 80; 

 scales, 3t) to 39; transverse series, 74-1 + 7. 



Ventral outline of body forming a deeper curve than doi'sal outline. 

 Nape straight or sometimes very slightl}^ conciive. Maxillaiy extend- 

 ing- past front of eye nearly to front of pupil. Gill rakers short and 

 rather slender; the longest one-third of diameter of eye; 10 or 11 on 

 lower liml) of arch. 



Front of dorsal midway ))etween l)ase of caudal and tip of snout, or 

 varying from this point to a point midway between base of caudal and 

 anterior margin of eye. Origin of anal under base of sixth or seventh 

 dorsal ra}'. Ventrals placed considerably in front of dorsal; their tips 

 not reaching to front of anal. Pectoral scarcely reaching- to base of 

 ventral. 



A dark lateral band runs from upper part of gill opening to base of 

 middle caudal rays, becoming broad behind middle of body, constricted 

 on caudal peduncle, again expanding to a large dark spot at base of 

 caudal, and continued to tips of median caudal rays. Anteriorly an 

 indefinite spot, slightly lighter than the ground color, more or less 

 completely separates a small portion of the lateral band from the main 

 part. Specimens from P^ten do not have the lateral band so much 

 ("xpanded just behind middle of body and not so dark or conspicuous 

 anteriorly as those from Payta. 



«Cat. Fish Brit. .Mns.. \'., p. :;07. 



